<style>
    @media (max-width: 1024px) {
        img.lcxs_show {
            display: none;
        }
    }
</style>
<img src="static/novels/img/lcxs_show.jpg"
     style="width:180px;height:180px;position: fixed;left: 20px;bottom: 20px;"
     class="img-responsive lcxs_show" alt="粮草小说">